cswiger at mac.com
Thu Nov 17 20:04:38 GMT 2005
Marc G. Fournier wrote:
> First off, what is it? On 32bit platforms, to address >4G of RAM, I
> recall that there is some sort of 'paging' that has to be done to
> address it ... does EM64T get around that somehow, or is this just
> another name for it?
EM64T uses 64-bit wide registers and addressing, and can talk to >4GB of RAM
natively. Older processors may still support >4GB of physical RAM using the
PSE/PSE-36 CPU extensions, but are still using 32-bit registers.
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